function detetion_img = detect_process_3(detetion_img,x,y,extract_bits,orgin_bits)
%UNTITLED3 此处显示有关此函数的摘要
%   对应1个4*4分块检测
N=4;%分块大小为4
%只要是不相等的达到阈值，那么就认定这块被修改
if mycomparebit(extract_bits,orgin_bits)
    detetion_img((x-1)*N+1:x*N,(y-1)*N+1:y*N)=255;
end
end

